US5204765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display device having reflector of a substrate, a patterned resin, and a reflective film, and method of making same
Assignee: Sharp Corp
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Filing: 1992-01-17
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Granted: 1993-04-20
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Expires: 2012-01-17
Abstract
Abstract A reflective liquid crystal display device comprising a reflector with a number of small convex portions of the same shape is provided. The reflector is formed by patterning a photosensitive resin applied to one surface of a core substrate to a predetermined pattern so as to form a number of small convex portions, heat-treating the surface having the convex portions, and covering the surface with a reflective film. By suitably selecting the shape of the convex portions, the reflective properties of the reflector are controlled.
Inventors
- 👤 Seiichi Mitsui
- 👤 Naofumi Kimura
- 👤 Yutaka Ishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:30
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/02; G02B5/0205; G02B5/021; G02B5/0215; G02B5/0273; G02B5/0284; G02B5/12; G02B5/122; G02B5/124; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133553; G02F2201/00; G02F2201/12; G02F2201/121; G02F2201/123; G02F2203/00; G02F2203/02; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
83 words
A reflective liquid crystal display device comprising: an insulating substrate having a transparent electrode formed thereon; a reflector including a core substrate, a number of small convex portions formed on the core substrate by patterning a photosensitive resin applied to one surface of the core substrate by use of a photomask having a predetermined pattern, and a reflective film covering the surface of the core substrate having the convex portions; and a liquid crystal layer sandwiched between the insulating substrate and the reflector.
Claim 2
Dependent Claim
83 words
A reflective liquid crystal display device comprising: an insulating substrate having a transparent electrode formed thereon; a reflector including a core substrate, a number of small convex portions formed on the core substrate by patterning a photosensitive resin applied to one surface of the core substrate by use of a photomask having a predetermined pattern, and a reflective film covering the surface of the core substrate having the convex portions; and a liquid crystal layer sandwiched between the insulating substrate and the reflector.
Claim 3
Dependent Claim
28 words
A reflective liquid crystal display device according to claim 1, wherein the surface of the reflector on which the reflective film is formed faces the liquid crystal layer.
Claim 4
Dependent Claim
30 words
A reflective liquid crystal display device according to claim 2, wherein the reflective film of the reflector functions as a counter electrode for the transparent electrode on the insulating substrate.
Claim 5
Dependent Claim
33 words
A reflective liquid crystal display device according to claim 1, wherein the convex portions are formed at a pitch of 100 μm or less and have a height of 10 μm or less.
Claim 6
Dependent Claim
33 words
A reflective liquid crystal display device according to claim 2, wherein the convex portions are formed at a pitch of 100 μm or less and have a height of 10 μm or less.
Claim 7
Dependent Claim
33 words
A reflective liquid crystal display device according to claim 3, wherein the convex portions are formed at a pitch of 100 μm or less and have a height of 10 μm or less.
Claim 8
Independent Claim
108 words
A method for fabricating a reflective liquid crystal display device provided with a reflector including a core substrate, a number of small convex portions formed on the core substrate and a reflective film covering the surface of the core substrate having the convex portions, the method comprising the steps of: patterning a photosensitive resin applied to one surface of a core substrate for the reflector by use of a photomask so as to form a number of small convex portions on the core substrate; heat-treating the core substrate having the convex portions; and forming a reflective film on the surface of the core substrate having the convex portions.
Claim 9
Independent Claim
108 words
A method for fabricating a reflective liquid crystal display device provided with a reflector including a core substrate, a number of small convex portions formed on the core substrate and a reflective film covering the surface of the core substrate having the convex portions, the method comprising the steps of: patterning a photosensitive resin applied to one surface of a core substrate for the reflector by use of a photomask so as to form a number of small convex portions on the core substrate; heat-treating the core substrate having the convex portions; and forming a reflective film on the surface of the core substrate having the convex portions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-19 | 1996-10-19 | 1997-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-19 | 2000-10-19 | 2001-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-19 | 2004-10-19 | 2005-04-20 | $7700.00 | Window Closed / Lapsed |